PACKING PREFORMED
P/N MS28772-343
P/N S2383916
P/N 1183-343
P/N 1446-343
NSN 5330 00 543 2990
MFG PARKER HANNIFIN

NEW GOV SURPLUS

ITEM NAME PACKING,PREFORMED
DEFINITION A circular shaped item with an aperture manufactured to predetermined
dimensions and designed for use as a seal in stuffing boxes, packing
nuts, and the like. It may be (1) any nonmetallic molded or formed
ring (except solid (without joint) rings having a square or
rectangular cross section); or (2) any shredded metal or metal foil
type metallic or semi-metallic rings. Excludes felt items but includes
multi-material items in which one of the materials is felt. For solid
(without joints) nonmetallic items with a square or rectangular cross
section, see WASHER (as modified) and GASKET. For rubber items
specifically designed for weather-proofing doors, windows, chests, and
the like see SEAL, NONMETALLIC ANGLE; SEAL, NONMETALLIC CHANNEL; and
SEAL, NONMETALLIC, SPECIAL SHAPED SECTION. For circular (with
aperture) nonmetallic items with a solid round cross-section see
O-RING. Excludes CUP, COMPRESSION; GASKET; WASHER (as modified); and
FELT, MECHANICAL, PREFORMED.

CHARACTERISTIC VALUE
CROSS-SECTIONAL SHAPE STYLE DELTA
III TEMP RATING -65.0 DEG FAHRENHEIT AND 160.0 DEG FAHRENHEIT
CROSS-SECTIONAL HEIGHT 0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM
CENTER HOLE DIAMETER 3.710 INCHES MINIMUM AND 3.740 INCHES MAXIMUM
PERIPHERAL DIAMETER 4.145 INCHES NOMINAL
HARDNESS RATING 65.0 SHORE DUROMETER A MINIMUM AND 71.0 SHORE
DUROMETER A MAXIMUM OVERALL
MATERIAL RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
MATERIAL DOCUMENT AND MIL-P-5516,CL B MIL SPEC SINGLE MATERIAL RESPONSE
CLASSIFICATION OVERALL